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CVE-2018-17879: The CGI scripts allow remote attackers to execute code via system() as root.

CVE-2018-17879 is rated critical with a CVSS v3.1 base score of 9.8 and NVD lists 47 affected products, including Abus Tvip 10000 Firmware. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

An issue was discovered on certain ABUS TVIP cameras. The CGI scripts allow remote attackers to execute code via system() as root. There are several injection points in various scripts.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-78: Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

Affected products

  • Abus Tvip 10000 Firmware: all versions listed by NVD
  • Abus Tvip 10001 Firmware: all versions listed by NVD
  • Abus Tvip 10005 Firmware: all versions listed by NVD
  • Abus Tvip 10005a Firmware: all versions listed by NVD
  • Abus Tvip 10005b Firmware: all versions listed by NVD
  • Abus Tvip 10050 Firmware: all versions listed by NVD
  • Abus Tvip 10051 Firmware: all versions listed by NVD
  • Abus Tvip 10055a Firmware: all versions listed by NVD
  • Abus Tvip 10055b Firmware: all versions listed by NVD
  • Abus Tvip 10500 Firmware: all versions listed by NVD
  • Abus Tvip 10550 Firmware: all versions listed by NVD
  • Abus Tvip 11000 Firmware: all versions listed by NVD
  • Abus Tvip 11050 Firmware: all versions listed by NVD
  • Abus Tvip 11500 Firmware: all versions listed by NVD
  • Abus Tvip 11501 Firmware: all versions listed by NVD

References